DE2156869A1 - Heat recoverable item - Google Patents

Description

so

Blank page

Patent Pending · LJ Or. Ing. Welter Abite t (//

ΛΕΪ 21S6869

November 16, 1971 89 719

RAYCHEM CORPORATION

300 Constitution Drive, Menlo Park, Calif. 9 * K) 25,

V.St.A.

Heat recoverable item

The invention concerns heat-recoverable objects and in particular heat-shrinkable objects that can be closed off of flat cables are suitable.

In many cases it is desirable to cover or encapsulate one or more articles with a heat-recoverable sleeve. In general, a heat-retractable sleeve, which is a type of recoverable sleeve, can be made from a sleeve of a material , which can be given a storage capacity for plastic and elastic behavior. This sleeve expands to a diameter at oinsr increased temperature! ¹ , which is bigger than its normal diameter

■ »1 -

2SI9827 / 0S30

89 719 J (\

is, and is then cooled, placing it on the enlarged Dimension is maintained, A sleeve treated in this way retains its expanded dimensions until it is reheated, whereupon it regains its original shape. Examples of heat retrievable sleeves are in the United States patents 2,027,962 and 3,086,242.

A particular area in which heat-recoverable sleeves are extremely useful is the production of insulated solder connections between electrical conductors, e.g. between a terminal on a part of an electrical apparatus and a wire or between two wires · In general happens ^»J ies characterized in that the recoverable sleeve is provided with an internal ring or a ball of solder _{4 is} inserted, the electrical conductors into the two ends of the sleeve and the whole is heated so that the sleeve regains its original shape and. the solder melts and connects the two conductors. The result is a good electrical connection that is isolated and protected by the sleeve. A preferred method of making such an electrical connection is described in U.S. Patent 3,243,211. Although the creation of an electrical connection is made much easier by such sleeves with solder, the installation of the individual solder sleeves has sometimes been relatively difficult, for example when a Flaclücabel, which contains up to 20 or more individual conductors closely spaced apart, with one to be connected to other such cables or to the pins of a terminal block *

It has already been suggested that a number of separate wires be replaced by the use of a number of separate ones To connect solder sleeves at the same time and thereby the

2Q9827 / 0530

Hüleeη to hold together by a metal clamp or some other mechanical device. During recovery of the individual soldering sleeve v / ird the mechanical device In addition, machines for the simultaneous termination of the conductors of a flat cable became unusable suggested with separate solder sleeves. Although these proposals are widely used in industry have found, there are use cases at which are impractical to use, but such degrees are highly desirable.

The aforementioned disadvantage can occur. If, to ensure that optimum environmental insulation is achieved by having an insulated length of conductor enclosed within each individual solder sleeve is stripped, the flat cable, and must be separated into individual insulated conductors. So it existed all the time a need for a facility by which a number of fla chka be cheers can be connected at the same time, that electrically insulated connections and connections insulated from the environment can be obtained without complicated ones Cable stripping work must be carried out.

The invention provides a heat-recoverable object created which is suitable for installation in a multi-conductor flat cable (of the type described below) and which, if heated in the absence of a substrate, recovers to a flat shape, which object is recovered by a heat retrievable hollow element with a housing part is formed, which can accommodate the cable and at its one end with a number of spaced apart, interconnected tubular members, each of which is a single conductor of the flat cable can accommodate.

. 209S27 / OSJO

In the following description is under the title "Flat cable" means an insulated cable, which includes a plurality of conductors which are generally aligned in a single plane. Such a cable is also a "tape" cable, that is, a Cable, the main surfaces of which are due to the different thicknesses between the insulating webs, which the Separate the individual conductors of the cable and the insulation directly adjacent to the individual conductors themselves are wavy. Furthermore, it is of course also to be understood as meaning the really flat cables with smooth surfaces. The flat cable with which the invention The article used may contain from about two to sixty or more individual conductors. More often contains there are about ten to about sixty conductors, and more particularly about twenty to about sixty conductors. The number of tubular Conductor receiving elements in an object according to the invention is of course determined by the number of cables and the conductors contained in the cable that are to be connected to a single heat-retrievable object, certainly. The distance between each cable ladder is usually about 1.27 mm - 3.81 mm (approx 0.050 to 0.150 ") and the distance between the longitudinal axes of the tubular element is preferably approximately equal to that between the cable ladders.

In the case of the article according to the invention, the hollow Element preferably has a series of longitudinal seams, which are calibrated from one end of the element to, but not completely, others extend, at least the latter end being open and the part of the hollow element without the seams forming the housing and the seams adhering the opposing walls of the element together connect (as explained below) to

209I27 / 0S30

89 719 _p

to form the tubular elements and connect them to each other *

The subject according to the invention can also be a second 'Have a housing that contains a multi-core * flat cable (such as defined above) or another electrically conductive object with a plurality of conductors can, which are arranged essentially in one plane «with the two housings through each other the tubular elements are in communication. When the opposite has two housings, the hollow element has preferably two open ends and a series of longitudinal seams which do not extend to either end so that the end parts of the hollow member having no seams form the first and second housings, while the seams connect the opposite walls of the element to each other, to delimit the tubular elements and connect i, u to one another.

Under the designation "adhesive or integral connection" and "adhesive or, integral connection" is to be understood in the present description that the respective Connection is strong enough to withstand the peeling force that occurs during the expansion process the object according to the invention has a heat recovery capability, communicated, exercised, can withstand. The integral or adhesive connection can be made with the help of a Hot melt adhesive of a solvent adhesive or preferably done by using heated plates or rollers. If necessary, they can be integral with one another Lzw. Adhesively to be joined material foils heated to a suitable temperature and the "bond" through the Use of unheated hats or rollers can be brought about.

209127/0530

89 719 f

Since the or each housing in the inventive Subject to an isolated width the cable can itself recover back to the connection formed electrically to isolate and to isolate it from the environment, needs the cabal end in the preferred case only in a straight line using a conventional one cold or warm knife or by application being stripped by infrared scraping, so there is no need for complicated cable stripping tools to use. The invention Object enables a variety of flat cable cores to be connected at the same time with the wires of a second flat cable or with the terminals of an electrical connection device.

In the object according to the invention, the longitudinal axes of the tubular elements are preferably relative to one another parallel and in the case of the article with only one housing, the ends of the tubular elements, polygamy, are not are in communication with the housing, preferably open. Each of the tubular elements can be of one over his Length of uniform cross-section Cross-section change in such a way that, for example, the tubular element tapers while the intervening seams increase in width.

The opposite walls of the hollow heatable Elements can those one? extruded earlier or otherwise shaped tube. Preferably, however, the opposing walls form one first and second sheet of material (layers) running along their side edges are adhesively connected to each other, so that they form lateral longitudinal rows. The longitudinal seams, which delimit the tubular elements and

20S827 / GS36

• 9 719

connect to each other can be molded simultaneously or subsequently. If necessary, the heat recoverable Element are formed from a single sheet of material, a pair of side edges thereby has been arranged adjacent that the film has been folded and the side edges adhered to one another joined to form a single side seam. The opposite walls can then simultaneously or subsequently adhering to one another in the longitudinal direction be joined to form the seams defining and connecting the tubular elements .

In the subject matter of the invention, there is at least one of the tubular members preferably with an insert of fusible solder in abutment therewith Walls. Preferably, each of the tubular members is provided with an insert of solder. The solder a set can - the shape of a ring, a U, a rod, a sphere or be of any other shape. You can press fit in the tubular elements or the tubular elements can optionally be brought around a mandrel for pre-recovery, so that they are firmly against the solder bits.

Each of the tubular elements with one-. Solder insert is provided, is preferably also abutting with a ring made of a fusible polymeric material provided on the walls of the tubular element. V / hen the object only has a single housing, can the ring of fusible material between the solder insert and the end of the tubular element "that is not open to the housing" a material is referred to here as fusible if it can melt at the temperature to which the

• Recoverable material is heated to allow its recovery animal watch s. If the item is subjected to a recovery treatment, the ring will be made of fusible material polymeric material to melt and flow and ultimately forms an improved insulation of the soldered »connection formed in the tubular element. At the same time, the molten material acts as a solder containment through which the flow the molten solder is passed. If desired" For example, two rings of fusible polymeric material can be used in a single tubular element such that one is on "each side of the solder insert."

One or more rings of fusible polymeric material can also be used in tubular elements that do not contain solder inserts. Furthermore, regardless of whether solder inserts are used or not, the housing or at least one of the housings is advantageously provided with a ring made of fusible polymer Provide material close to the walls »The meltable polymeric material increases the insulation, which is formed by the recovered heat recoverable material. As the heat recoverable material recovers, it causes the molten polymeric material to flow to and fill the recesses in the flat cable or otherwise fill the air spaces between the recovered connector and the connected object. Preferably, the fusible polymeric material can form a firm adhesive bond between the article according to the invention and the substrate or substrates on which it wilts . is brought to recovery, form.

Ίο

That used for the subject according to the invention 6 Meltable polymeric material can consist of virtually any material that can flow through the application of heat can be made. For example, conventional thermoplastic materials such as polyolefins (e.g. Polyethylene and polypropylene; / len) polyamides (e.g. nylon), Polyester (e.g. Polyä.thv ^ enterephthalat, cellulose acetate) and other common materials can be used. It should also be mentioned here that the meltable polymer insert is not a conventional thermoplastic insert Material needs to be, but made of heat-hardenable Materials such as epoxy resins, polyurethanes, and phenol-aldehyde condensation products. It is also possible in combination with the heat-shrinkable material Use certain materials that are not in exactly the same way as fusible materials behavior, e.g. insulating grease and heat-catalyzed adhesives.

The heat recoverable element in the inventive The object is advantageously transparent. In the present description, an element is referred to as "transparent" If it allows visible light to pass through and the scattering is insufficient, it denotes the soldered Making connections of the element inaccessible to visual inspection. Transparency and the with it connected possibility to inspect the soldered connections, can be easily done by a corresponding Choice of materials,

The thermally curable connection devices according to the invention are formed from a material which consists of a polymeric ttatovinl which has a storage capacity. ^c ; ti suAier. and f le <. nti E «. 'h« j £ relationship with-

ilii * I t Ά

89 719

"can be shared. MateirLalien with such Storage capacities are in their original form changed shape stable in the heat to a shape unstable in heat, where only the application of heat tends to move in the direction of the original Move shape. The Eezeiclaiungen "plastic Storage capacity "and" elastic storage capacity " have been used interchangeably here and should include each other,

Examples of heat recoverable materials are given in U.S. Patents 2,027,962 and 3,08B,242. One method of making a heat recoverable material is to subject a thermoplastic material to an amount of heat insufficient to melt the material but sufficient to distort the molecular structure and then to deform the material to an exvi new shape and is cooled in its deformed state »Subsequent increases in temperature sufficient to relieve the" retained "stresses caused by the initial plastic deformation> result in the object tending to recover to its initial state.

Another way »in which wormer recoverable Articles that can be made consists of molding a polymeric article with a first Dimension followed by crosslinking of the polymer. The crosslinking can be partly done by chemical means by peroxides or by irradiation odor through a combination of both can be done. The applied Irradiation chin of different kind uoin. l »i i ;; j ie? In-

wei e * with charged particles, ie, beta and alpha particles, neutral particles such as neutrons "and electromagnetic irradiation, ie Gammabe radiation and ultraviolet irradiation ^, _w ell known per se. When radiation is used, any dose of any desired size can be used, although a dose of five to fifty megarads is usually sufficient. By subsequently heating the materials, the crystals are melted at a crystalline thermoplastic material or other internal molecular forces, t; bond ie hydrogen or ¹ dipole-dipole interactions are substantially reduced to a degree sufficient to allow deformation of the product. By cooling the heated and deformed object while maintaining the deformation force, a product is obtained that remains in its deformed shape at room temperature, which is due to the conversion of strong chain forces, such as crystallinity, which dominate the contrary stresses at low temperatures resulting from the networking. Further details of the cooling process are given below. When heated again, the cross-linking forces become dominant and the material tries to recover to its original geometry _{or the like}

If a material, which can be given elastic storage capacity (WarmerbolbarJce.it), has been expanded to a new dimension at an elevated temperature, the temperature of the material is reduced to a temperature lower than that at which the expansion takes place and below a transition temperature of the material. The voltage communicated during the expansion is stored in the "storage bank ^{11 of} the material" for subsequent removal during the increase

U ? S

the temperature is deposited on its heat recovery temperature · With the heat recovery technique can of course pre. part can be drawn from different transition points,. ..;,

for example the crystalline melting points or glass transition points. In the present description the terms crystalline melting point and crystalline melting temperature are referred to as synonymous and represent represents the temperature or the temperature range at which or within which crystalline or crosslinked crystalline polymeric material changes from crystalline to converts to amorphous state. The terms glass over temperature and glass transition point are synonymous considered and represent the temperature or the temperature range at which or within which a hard softens amorphous material,

Examples of polymeric materials imparted heat recoverability by the above and other means are polyethylene, polybutene, various copolymers of ethylene, propylene and butene; Polyvinyl halides such as polyvinyl chloride; Polyacrylates; Polyamides, E.B. Nylon 6 or nylon 66; Polyesters, e.g., polyethylene terephthalate; Fluorocarbon polymers such as polytetrafluoroethylene; Ionomers, polyurethanes and other materials, such as epoxy resins. Vinylidene fluoride polymers are particularly preferred, ».B. Polyvinylidene fluoride (x «B, Kynar), vinylidene fluoride-hexafluoropropene copolymers (Viton * i da · von.,. ' from DuPont Company)., and vinylidene fluoride * chlorotrifluorethylene copolymers (KeI-F, which was developed by the Minnesota Mining and Manufacturing Company) Any of the foregoing materials may be used in the subject matter of the invention, although they may be used crosslinked polymeric materials is preferred »

It can be produced in the manner according to the invention

- 12 -

209827/0530

«9 71S fJ / J If / Jh56869

Double housing object al3 such can be used or, if necessary, the tubular elements can be cut through to form single housing protrusions will.

Flat cables, terminal strips or other electrical connection elements can recoverable with the invention Objects are obtained, the housing part of which is subjected to a pre-recovery around their insulation has been to form a coherent unit, in which the individual conductors are arranged within the tubular elements of the retrieved item and are available for soldering to other conductors or connections. During the advance of the housing part an object according to the invention to a cable or Another device around for forming such a coherent unit can be the tubular members and, if present, a second housing part are prevented from recovering by the fact that a different one Heating or a mandrel is used, yie this is known to a person skilled in the art »

For recovery of the articles of the invention and for melting the solder inserts and / or the fusible ones Rings made of polyroher material> contained in them Warm air, infrared, conduction or high-frequency induction heating can be used will. Suitable work ^ temperatureη V7erden after consideration the various conditions such as the melting point of the solder and the fusible polymeric rings, if any, and the recovery temperature and des I> 2gradation3punktcß of the reversible connector self-determined. For example, polyethylene connectors »; preferably with a low temperature: rature soldering

- LH

medium, such as indium I ₁ is used, which melts at about 137 ° C (279 ° F) Other heat-shrinkable materials, they can vinylidene fluoride polymers are used with a solder *, for example, at 230 to 315 ° C - 600 ⁰ F ) melts.

The heat-retrievable connecting devices according to the invention can be manufactured continuously. For example, a first and a second sheet of material to which heat recovery can be imparted can be unwound from rolls and their side edges can be continuously adhesively bonded to one another to obtain a hollow element. Simultaneously or subsequently, the opposing walls of the molded hollow element can be integrally connected by passing the element between heated rollers which intermittently form longitudinal seams across the element to delimit tubular elements therein tubular elements alternating with housings which can then be irradiated, heated, pneumatically expanded and cooled in the expanded state, alias as described in U.S. Patent 3,006,242. which contain insulated housings and tubular elements, are divided by forming lateral adhesive seams over the width of the hollow element and the sheaths obtained can be continuously expanded with the needle, as described in US Pat. No. 3,303,243 continuously ga formed w poor he fetchable c pipe then to Hildunp. of w'irnie'jrholba »en connecting pieces with separate Y. iir / .c · l ^ eha or E <oppelcehüur.en p.eschnittcn i -. 'jrdeii.

-IU-
: -M * β / 1 t Π i ■;

is K ^21568ε9

Where the size allows, the inventive «Provide poorly recoverable connecting pieces with inserts be having a mechanical advantage to support of the recovery forces, for example lever, scissor and coil spring devices. The connecting pieces according to the invention were primarily described in connection with the connection of electrical conductors by soldering.

However, practice can, of course, be done by erixndu » _B » iiema

directions, even without solder, can be used in any case when connecting a plurality of elements together and should be encapsulated. Further application form for the subject according to the invention result in exen for the person skilled in the art without further ado.

The inventive heat- _{retrievable connecting pieces * rp} just a strain relief for the individual conductors or AdL and the gated connections. When the connectors are transparent, as is the case with the preferred embodiment of the invention, their transparency enables visual inspection of the electrical connections formed by the connectors. The invention enables a large number of cores or conductors to be terminated in such a way that the termination is isolated from the other. Furthermore, the invention provides a means by which a plurality of veins or conductors are terminated at the same time and the formed connections are electrically insulated and

be protected against the environment without M * ">" **? *

^{β &} ... ■ -η = «-an. the so far

Kabe labstreif procedure angewsnoet * «·« - »» ——, -

were sometimes used.

. Another advantage of the items according to the invention consists in the fact that, if their size is chosen correctly, they can take on a shape during heat recovery, ■ which is only slightly larger than the cable, in order to «eiche. nex «u> n they can be brought to recovery.

For example, wearing a typical flat cable insulation with a thickness of about O ₁ 6 3 mm (about 0.025 "), the individual wires has a thickness of about 0.07 to 0.13 mm (about 0.003 to about 0.005" have). 'Typical connectors, which have been prepared in the manner erfxndungsgemässen _s are those in which the amount ranges of thickness of the extended wall of about 0.07 to 0.13 mm (from about 0 * 003-.005 "). the erfxndungsgemässen counter 6tände can of course be manufactured in any desired size depending on the intended use, but the preceding example shows that the connecting devices according to the invention can be used to isolate flat cable wire connections without increasing the cable profile excessively. Indeed, the recovery properties are of the objects which can be manufactured in the manner according to the invention, in such a way that the recovered object sometimes appears as if it were on the conductive elements around which it has been brought to recovery.

The invention is described in more detail below, for example in connection with the accompanying drawings although show:

Fig. 1 is a view, partially cut away, of an embodiment of the object according to the invention;

Fig. 2 is a sectional view taken along line B-B in Fig. 1;

Fig. 3 is a sectional view of the article shown in Figs. 1 and 2 after heat recovery by one Number of flat cable claders;

Fig. U is a view, partially cut away, of a second Embodiment of the subject according to the invention}

- 16 -

2098? 7 / Q53Q

89 719

Fig. 5 in auseinandergezogender representation of a way in which an inventive article may be used to provide a flat cable with a vieladrigee Anschluftleiste to connect ·,

FIG. 6 shows, partly in Schmitt, the components according to FIG. 5 after assembly, but before heat recovery;

7 shows a view of the components according to FIG. 5 after Cultivation of crops and heat recovery;

8 shows the use of an object according to the invention for connecting a flat cable to an electrical one Terminal strip; and

9 shows the use of an object according to the invention for the electrical connection of two flat cables.

1-3 show a heat-retrievable element 10. The element 10 has a first and a second housing 11 and 21, respectively, which can accommodate flat cables and are connected to one another by a number of parallel pipe-finished elements 12 spaced apart from one another. The tubular elements 1? are delimited and interconnected by a series of longitudinal seams 13 which integrally connect the opposing walls of the hollow element from which the heat-recoverable element 10 is formed. The hollow element is formed by two material foils IS and 16, which are integrally pronounced with one another along their side edges, so that lateral Lr'inyisnjht'i 17 and IR result. On dun walls of the Ce.h.'iuv. '. S 11 runs a Ri nj; 3Ί from fusible polymereiii l \ '. \ 1ci j -1.L' Ui. l). \ :, üo | ; ί 1 i; ch.'J'rjc-V. rbinduritfustück LO can ;; 7-'1WOMtI''t ν * ϊΐ-3 ^r * io;! <! I · \ y j'.abennrif'a L \ i- nur.ni

·. 17 - Ί1Ί '! »7 / !! Γ M)

89 719

be cut (for example after the line B-B in Fig. 1), · o that two single! Housing connection devices -;

-be obtained. ■, <^. ,, - . Π'r # ^ί ·

FIG. 3 shows in section the arrangement which is obtained by heat recovery of the object according to FIGS. 1 and 2 'around flat cable cores 14 which have been inserted into the tubular elements 12 before their heat recovery. Figure 3 clearly shows the ability of the articles of the present invention to take on a shape, upon heat recovery, which is somewhat larger than that of the cable around which they are brought to recovery. As FIG. 3 shows, the recovered article appears to be extruded onto the veins 14.

In Fig. 4 is a heat recoverable3 connector with a single housing 20 and a number of tubular elements 12 dargeärellt which by a series of seams 13 together are connected. The hollow member from which the heat retrievable connector is formed is made of a single sheet of material, the side edges of which were brought to bear against one another by folding the sheet, which Seitenrändsr to form a single longitudinal seam 19 have been integrally connected to one another. Each of the tubular members 12 abuts against its walls with a solder ring 35 and with a ring 36 made of fusible polymeric material, the ring 36 being the side of the solder ring 35 facing away from the housing 20 = during recovery " During operation, the fusible polymer ring 36 melts Material and eventually flows so that increased insulation of that formed within the tubular member 12 Solder joint is obtained »At the same time, the molten material acts as a solder containment, by soft the flow of molten solder is directed.

- 18 -

Q: g. S-7 show the use of a heat-retrievable connector 22 for connecting a ribbon cable 27 to a terminal strip 28. The ribbon cable 27 is formed by a number of separate wires 32. The connector 22 is formed from two sheets of material 23 and 24 which are integral with each other at their side edges connected bind and a housing 25 and a number of tubular elements 26 form. As can be seen in Fig. 6, each of the tubular elements 26 is provided with a fine solder ring 33 which is held in place by the walls of the tubular element and contains certain proportions of a solder and a flux. The terminal block 28 is provided with sockets 29 and 30, into which spring contact elements 31 are inserted. An extension of each of the contact elements of the _# 31 forms a socket which projects from each of the sockets 30th When the tubular EGG- ^

each of the sockets 30 protrudes. When the tubular If elements 26 do not contain solder inserts, the individual wires 32 of the ribbon cable can be tinned and solder be provided in the pans.

To form a soldered connection between the ribbon cable 27 and the connection strip 20, the individual wires 32. and the protruding lips of the bushings 30 through the opposite Ends of tubular members 26 inserted, with housing 22 a retained portion the ribbon cable insulation overlaps. When the assembly so formed is at the recovery temperature of the heat recoverable Object 22 and heated to the melting point of the solder ring 33, the housing 23, 21 and the rim will shrink of the object 22 adjacent to the terminal block 28 in. Support on the insulation of the ribbon cable 27 and the vors dividing parts of the bushings 30. If the heating continues

s »

ert, the flux flows to prepare the surfaces

j and the conductive agent melts to form the compound, Die

j '- 19 -

rs.

tubular elements 26 continue to shrink, whereby the Cores 32 pressed into the molten solder and on the same side the flow of solder is regulated. When cooling down The solder hardens and cools the sleeve to form an insulated solder joint. The shrinking effect of the article 22 ensures the close proximity of the metals to be joined and a standstill during cooling, two requirements that must be met for t, ate Solder connections are taken into account.

The soldered arrangement obtained is shown in Fig. 7, from we Icher the electrically insulating and against the environment shielding property of the recovered connector 22 'can be seen. As can be seen, the housing has been isolated in the corrugations between each Ribbon cable veins recovered. The insulation achieved in this way for the soldered connections formed can still be improved if the housing 22 is designed so that it is made of a fusible ring in abutment against its inner walls polymeric material similar to that shown at 34 in Fig. 1, so that upon recovery the fusible material is caused to move towards the depressions in the flat cable to flow and fill them or otherwise the air spaces between the recovered connector and the • to fill connected object. Preferably connects The fusible polymeric material adheres to the cable insulation.

8 and 9 show two types of connections with which the inventive double housing connecting pieces in can be used advantageously. In Fig. B are Soldered connections 37 have been made between a terminal strip 38 with plug connections 39 and a flat cable 40 » A clear warning shrink fit connector with housings Ul and 42 isolates the connections formed

- 20 -

ΤΛ

and shields them from the environment. From Fig. 8 results that the housing 42 is around the terminal strip. 38 around, can be pre-recovered or it can if necessary (The housing 41 can be recovered around the cable 40. Then the rest of the heat-recoverable housing of the formed unit are pushed over the device for connection to the wires of the unit, the desired electrical connection is obtained in the heat recovery of the unrecovered housing.

In üg. 9, a transparent heat-retrievable connector with housings 45 and 46 is arranged between flat cables 43 and 44, the individual wires of which have been partially inserted into housings 45 and 46. There is preferably used a double housing connection piece, which is used for connecting Flaohkabeln _s in conjunction with Lötnittsleinsätzen which have been inserted into the tubular members 4 7, but it can also be used with individual wires, which have been plated for the preparation of the solder joint are.

Claims (1)

9 719 November 16, 1997I Patent claims I ^ heat-recoverable object to be arranged on a yielead flat cable (as defined above) is suitable, which object when heated without a substrate recovers to a flat shape, characterized by a heat recoverable hollow Element with a housing part which serves to accommodate the cable and at one end with a number spaced apart integrally interconnected tubular members in connection stands, each of which can accommodate a separate wire of the flat cable. 2. Article according to claim 1, characterized in that the ends of the tubular elements that are not with the Housing communicating, s3nd open. 3. Article according to claim 1 or 2, characterized in that the longitudinal axes of the tubular elements to one another are parallel. 4. The object of claim 3, characterized in that dafi the distance between the longitudinal axes of the tubular Elements is approximately equal to the distance between the individual wires of the kabol. 89 719 5 «object according to claims 1 - H, characterized in that that the hollow element is formed by a first and a second sheet of material which are joined together integrally connected along their side edges are (as previously defined). 6. Geges. ^ State according to claims 1 - U, characterized in, that the hollow element through one single Material film is formed, the side edges of which miteinandet ^ are integrally connected (as defined above). 7. The article of claims 1-6 _t characterized in that the hollow element comprises a number of longitudinal seams, which extend from the open one end of the EIements to the other end, but not fully up to that, said at least the last-mentioned end itt, the part of the hollow element without seams forms the housing and the seams the opposite. Integrally connect walls of the element to one another (as defined above) in order to delimit and connect the tubular elements to one another. R- object according to claims 1-6, characterized in that that the hollow element also has a second housing that has a multi-core flat cable (such as defined above) or another electric conductive object with a variety of veins that - 23 - 89 719 are arranged essentially in one plane, record can »whereby the two housings are connected to one another through the tubular elements, 9. Object according to claim 8, characterized in that that the hollow element has two open ends and a row of longitudinal seams which do not extend to either end, the end portions of the hollow Elements that are without seams form the first and second Gehliuse, and the seams the opposite Walls of the element integrally connect together (as defined above) to the tubular To limit elements and to connect them with one another. 10. Object according to claims 1-9, characterized! that at least one of the Rohrfönnigen Elements is provided with a Schlötzbaren Lötmittelexnsatz lying against its walls. 11. The object of claim 10, characterized in that that each of the tubular elements is provided with an insert of solder. 12. The article of claim 10 or 11, characterized in that each of the tubular elements is provided with a Lötmitte leins'atz, also with Einsni King made of a meltable polymeric material 209827/0530 adjacent to the wounds of the tubular material is provided. 13. Object according to claim 12, insofar as it is not dependent on claim 8 or 9, characterized in that da / i, if the article has only one housing, the ring of fusible material between the solder insert and located at the end of the tubular member which is not open to the housing. IN THE. Object according to claim 10 od (. * 11, characterized in that that each of the tubular elements provided with a solder insert is further provided with two Rings of fusible polymeric material are provided adjacent to the walls of the tubular element, which rings one on each wire of the solder insert is arranged. 15. Object according to claims 1-9, characterized - indicates that at least one of the tubular egg \. elements with a ring made of a fusible polymer Material is provided adjacent to its customers. 16. The object of claim 15, characterized in that that each of the tubular elements is provided with a ring of fusible polymeric material. » Ί 17. Object according to claims 1 - 16, characterized in that that the housing or at least one of the housings with a ring of a fusible polymeric material is provided adjacent to its walls. 18. Object according to claims 12-17, characterized j that the fusible polymeric material is thermosetting. 19. Object according to claims 12-1.7, characterized in that that the meltable polymeric material by one of the above particularly mentioned materials is formed. 20. Object according to claims 12-19, characterized in that that the fusible polymeric material by an insulating fat or by a by heat catalyzable adhesive is formed. 21. Object according to claims 1-20, characterized in that that this .on has about 10 to about 60 tubular elements. 22. Object according to claims 1 -. .21, characterized in that it is at least partially transparent (as defined above). - 26 - 23. Object according to claims 1 - 21, characterized in that that the heat retrievable hollow member is formed by a crystalline polymeric material which exhibits elastomeric properties when e's is heated to a temperature at least equal to its • crystalline s chire la temperature. 4. Object according to claims 1 - 21, characterized in that that the heat retrievable hollow element consists of a crosslinked polymer. 25. The article of claim 24, characterized in that the polymer is a polyolefin. 26. The object of claim 24, characterized in that that the polymer is a vinylidene fluoride polymer. 27. The object of claim 26, characterized in that that the polymer is a vinylidene fluoride / Hexafluorop ^ open copolymer is. 28. Object according to AiSprüchen 1 - 21, thereby 'gekenri · - see that the heat retrievable hollow member is composed of one m of the aforementioned polymeric materials - exists, to which the property of the heat recovery bargeSt «Can be communicated« - 27 - 29. Object according to claims 1 - 21, characterized in that that the heat recoverable element from one • Is electrically insulating material. 30, Geg & ne ^ and for arrangement on a multi-core ^ flat cable (as ,,. defined above), characterized by that this is essentially as in Fig. 1-3, or in Fig. 4 ^ or in Fig. 5-7, or in Fig. 0 or shown in Fig. 9d *? r the accompanying drawing and is described above. 31. Open-ended heat-recoverable object that is used for electrical Connection of a multi-core flat cable (as defined above) is suitable, marked by an element which is heat recoverable to a flat shape and which has a first housing which a canoe to receive the cable and a number spaced apart, parallel, integral connected tubular elements in connection with the .Kammer is limited and so dimensioned in its size is that it can accommodate the individual wires of the cable, whereupon the tubular elements in use these are brought to V'är-Jr. recreation. 32. Object according to claim 31, characterized in that this at one end to the mentioned chamber and is open at the other end to a second chamber which is delimited by a second housing, the the first and second chambers together through the - 28 - ⁸⁹⁷¹⁹ shaped elements are connected between them, 33. Arrangement, characterized by an insulated electrically conductive object with a number Cores which are arranged essentially in one plane, which object at least on one End through an object according to claims 1 32 is completed, the end of each of the individual veins is in a separate tubular element extends and the housing or one of the housings around the insulation of the object adjacent to the mentioned Ends of the veins has been brought around for heat recovery. 34. Arrangement according to claim 33, characterized in that that the insulated electrically conductive article is a flat cable (as defined above). - 29 - 209827/0530